Granite Construction (GVA) 10-Q 6 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	6 Months Ended
	Jun. 30, 2019	Jul. 30, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	GRANITE CONSTRUCTION INC
Entity Central Index Key	0000861459
Trading Symbol	GVA
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		46,840,209
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	1-12911
Entity Tax Identification Number	770239383
Entity Address, Address Line One	585 W. Beach Street
Entity Address, City or Town	Watsonville
Entity Address, State or Province	California
Entity Address, Postal Zip Code	95076
City Area Code	831
Local Phone Number	724-1011

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Current assets
Cash and cash equivalents ($115,933, $131,965 and $82,047 related to consolidated construction joint ventures (“CCJVs”))	$ 144,958	$ 272,804	$ 195,515
Short-term marketable securities	41,037	30,002	20,014
Receivables, net ($31,656, $21,237 and $38,828 related to CCJVs)	551,958	473,246	492,718
Contract assets ($23,500, $19,699 and $24,479 related to CCJVs)	257,650	219,754	265,190
Inventories	102,163	88,623	96,024
Equity in construction joint ventures	241,786	282,229	252,467
Other current assets ($11,440, $11,744 and $12,421 related to CCJVs)	63,056	48,731	49,100
Total current assets	1,402,608	1,415,389	1,371,028
Property and equipment, net ($31,560, $34,761 and $38,854 related to CCJVs)	557,118	549,688	595,787
Long-term marketable securities	20,000	36,098	61,191
Investments in affiliates	82,109	84,354	99,495
Goodwill	264,107	259,471	246,881
Right of use assets	73,439	0	0
Deferred income taxes, net	36,055	2,918	25,135
Other noncurrent assets	122,705	128,683	156,808
Total assets	2,558,141	2,476,601	2,556,325
Current liabilities
Current maturities of long-term debt	48,397	47,286	207,982
Accounts payable ($50,338, $37,086 and $35,375 related to CCJVs)	303,128	251,481	303,885
Contract liabilities ($29,055, $60,288 and $40,678 related to CCJVs)	119,289	105,449	91,864
Accrued expenses and other current liabilities ($4,017, $2,046 and $2,147 related to CCJVs)	339,047	273,626	293,959
Total current liabilities	809,861	677,842	897,690
Long-term debt	366,896	335,119	280,710
Lease liabilities	60,868	0	0
Deferred income taxes, net	4,680	4,317	5,759
Other long-term liabilities	58,268	61,689	71,180
Commitments and contingencies	0	0	0
Equity
Preferred stock, $0.01 par value, authorized 3,000,000 shares, none outstanding	0	0	0
Common stock, $0.01 par value, authorized 150,000,000 shares; issued and outstanding: 46,838,199 shares as of June 30, 2019, 46,665,889 shares as of December 31, 2018 and 45,688,582 shares as of June 30, 2018	468	467	457
Additional paid-in capital	568,264	564,559	516,680
Accumulated other comprehensive (loss) income	(3,448)	(749)	1,022
Retained earnings	642,124	787,356	737,417
Total Granite Construction Incorporated shareholders’ equity	1,207,408	1,351,633	1,255,576
Non-controlling interests	50,160	46,001	45,410
Total equity	1,257,568	1,397,634	1,300,986
Total liabilities and equity	$ 2,558,141	$ 2,476,601	$ 2,556,325

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Cash and cash equivalents	$ 144,958	$ 272,804	$ 195,515
Receivables, Net	551,958	473,246	492,718
Contract assets	257,650	219,754	265,190
Other current assets	63,056	48,731	49,100
Property and equipment, net	557,118	549,688	595,787
Accounts payable	303,128	251,481	303,885
Contract liabilities	119,289	105,449	91,864
Accrued expenses and other current liabilities	$ 339,047	$ 273,626	$ 293,959
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	3,000,000	3,000,000	3,000,000
Preferred Stock, Shares Outstanding	0	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01	$ 0.01
Common Stock, Shares Authorized	150,000,000	150,000,000	150,000,000
Common Stock, Shares, Issued	46,838,199	46,665,889	45,688,582
Common Stock, Shares, Outstanding	46,838,199	46,665,889	45,688,582
Equity Method Investee [Member] | Construction [Member]
Cash and cash equivalents	$ 115,933	$ 131,965	$ 82,047
Receivables, Net	31,656	21,237	38,828
Contract assets	23,500	19,699	24,479
Other current assets	11,440	11,744	12,421
Property and equipment, net	31,560	34,761	38,854
Accounts payable	50,338	37,086	35,375
Contract liabilities	29,055	60,288	40,678
Accrued expenses and other current liabilities	$ 4,017	$ 2,046	$ 2,147

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue
Total revenue	$ 789,540	$ 807,119	$ 1,409,341	$ 1,370,498
Cost of revenue
Total cost of revenue	841,944	726,750	1,421,267	1,233,846
Gross (loss) profit	(52,404)	80,369	(11,926)	136,652
Selling, general and administrative expenses	69,998	61,316	151,153	122,568
Acquisition and integration expenses	9,177	26,287	12,500	34,696
Gain on sales of property and equipment	(4,935)	(1,505)	(6,835)	(2,048)
Operating loss	(126,644)	(5,729)	(168,744)	(18,564)
Other (income) expense
Interest income	(1,728)	(1,173)	(4,544)	(2,694)
Interest expense	4,158	3,203	8,172	5,638
Equity in income of affiliates	(2,594)	(3,534)	(3,884)	(3,758)
Other income, net	(759)	(940)	(2,521)	(672)
Total other income	(923)	(2,444)	(2,777)	(1,486)
Loss before (benefit from) provision for income taxes	(125,721)	(3,285)	(165,967)	(17,078)
(Benefit from) provision for income taxes	(31,760)	2,796	(40,925)	(1,335)
Net loss	(93,961)	(6,081)	(125,042)	(15,743)
Amount attributable to non-controlling interests	(3,875)	(2,304)	(7,368)	(4,065)
Net loss attributable to Granite Construction Incorporated	$ (97,836)	$ (8,385)	$ (132,410)	$ (19,808)
Net loss per share attributable to common shareholders (see Note 16)
Basic	$ (2.09)	$ (0.20)	$ (2.83)	$ (0.49)
Diluted	$ (2.09)	$ (0.20)	$ (2.83)	$ (0.49)
Weighted average shares of common stock
Basic	46,824	41,044	46,762	40,074
Diluted	46,824	41,044	46,762	40,074
Transportation [Member]
Revenue
Total revenue	$ 403,978	$ 502,711	$ 742,188	$ 861,856
Cost of revenue
Total cost of revenue	503,857	466,748	820,817	794,431
Water [Member]
Revenue
Total revenue	112,831	51,618	212,086	91,659
Cost of revenue
Total cost of revenue	101,568	46,168	192,704	74,645
Specialty [Member]
Revenue
Total revenue	175,084	151,842	315,777	270,313
Cost of revenue
Total cost of revenue	152,874	130,366	278,700	233,101
Materials [Member]
Revenue
Total revenue	97,647	100,948	139,290	146,670
Cost of revenue
Total cost of revenue	$ 83,645	$ 83,468	$ 129,046	$ 131,669

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (93,961)	$ (6,081)	$ (125,042)	$ (15,743)
Other comprehensive loss, net of tax:
Net unrealized loss on derivatives	(2,178)	(1,354)	(2,776)	(734)
Less: reclassification for net (gains) loss included in interest expense	(117)	1,602	(290)	1,562
Net change	(2,295)	248	(3,066)	828
Foreign currency translation adjustments, net	(527)	(421)	367	(438)
Other comprehensive (loss) income	(2,822)	(173)	(2,699)	390
Comprehensive loss	(96,783)	(6,254)	(127,741)	(15,353)
Non-controlling interests in comprehensive loss	(3,875)	(2,304)	(7,368)	(4,065)
Comprehensive loss attributable to Granite Construction Incorporated	$ (100,658)	$ (8,558)	$ (135,109)	$ (19,418)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands		Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Retained Earnings [Member]	Total Granite Shareholders' Equity [Member]	Non-controlling Interests [Member]
Beginning Balance at Dec. 31, 2017		$ 992,805	$ 399	$ 160,376	$ 634	$ 783,699	$ 945,108	$ 47,697
Beginning Balance (in shares) at Dec. 31, 2017			39,871,314
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(15,743)	$ 0	0	0	(19,808)	(19,808)	4,065
Other comprehensive income (loss)		390	0	0	390	0	390	0
Purchases of common stock	[1]	(6,165)	$ (1)	(6,164)	0	0	(6,165)	0
Purchases of common stock (in shares)	[1]		(104,432)
Restricted stock units (“RSUs”) vested		3	$ 3	0	0	0	3	0
Restricted stock units (“RSUs”) vested (in shares)			290,321
Dividends on common stock		(11,146)	$ 0	0	0	(11,146)	(11,146)	0
Effect of adopting Accounting Standards Update | ASU 2014-09 [Member]		(15,201)	0	0	0	(15,201)	(15,201)	0
Issuance of common stock for Layne acquisition		321,123	$ 56	321,019	0	0	321,075	48
Issuance of common stock for Layne acquisition (in shares)			5,624,021
Premium on 8.0% Convertible Notes		30,702	$ 0	30,702	0	0	30,702	0
Transactions with non-controlling interests		(6,400)	0	0	0	0	0	(6,400)
Employee Stock Purchase Plan ("ESPP"), amortized RSUs and other		10,618	$ 0	10,747	(2)	(127)	10,618	0
Employee Stock Purchase Plan (ESPP"), amortized RSUs and other (in shares)			7,358
Ending Balance at Jun. 30, 2018		$ 1,300,986	$ 457	516,680	1,022	737,417	1,255,576	45,410
Ending Balance (in shares) at Jun. 30, 2018		45,688,582	45,688,582
Beginning Balance at Mar. 31, 2018		$ 964,894	$ 400	162,038	1,197	751,801	915,436	49,458
Beginning Balance (in shares) at Mar. 31, 2018			40,047,187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(6,081)	$ 0	0	0	(8,385)	(8,385)	2,304
Other comprehensive income (loss)		(173)	0	0	(173)	0	(173)	0
Purchases of common stock	[1]	(46)	$ 0	(46)	0	0	(46)	0
Purchases of common stock (in shares)	[1]		(834)
Restricted stock units (“RSUs”) vested		1	$ 1	0	0	0	1	0
Restricted stock units (“RSUs”) vested (in shares)			9,712
Dividends on common stock		(5,940)	$ 0	0	0	(5,940)	(5,940)	0
Issuance of common stock for Layne acquisition		321,123	$ 56	321,019	0	0	321,075	48
Issuance of common stock for Layne acquisition (in shares)			5,624,021
Premium on 8.0% Convertible Notes		30,702	$ 0	30,702	0	0	30,702	0
Transactions with non-controlling interests		(6,400)	0	0	0	0	0	(6,400)
Employee Stock Purchase Plan ("ESPP"), amortized RSUs and other		2,906	$ 0	2,967	(2)	(59)	2,906	0
Employee Stock Purchase Plan (ESPP"), amortized RSUs and other (in shares)			8,496
Ending Balance at Jun. 30, 2018		$ 1,300,986	$ 457	516,680	1,022	737,417	1,255,576	45,410
Ending Balance (in shares) at Jun. 30, 2018		45,688,582	45,688,582
Beginning Balance at Dec. 31, 2018		$ 1,397,634	$ 467	564,559	(749)	787,356	1,351,633	46,001
Beginning Balance (in shares) at Dec. 31, 2018		46,665,889	46,665,889
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		$ (125,042)	$ 0	0	0	(132,410)	(132,410)	7,368
Other comprehensive income (loss)		(2,699)	0	0	(2,699)	0	(2,699)	0
Purchases of common stock	[1]	(3,948)	$ (1)	(3,947)	0	0	(3,948)	0
Purchases of common stock (in shares)	[1]		(88,091)
Restricted stock units (“RSUs”) vested		2	$ 2	0	0	0	2	0
Restricted stock units (“RSUs”) vested (in shares)			251,393
Dividends on common stock		(12,175)	$ 0	0	0	(12,175)	(12,175)	0
Effect of adopting Accounting Standards Update | ASU 2016-02 [Member]		(539)	0	0	0	(539)	(539)	0
Transactions with non-controlling interests		(3,209)	0	0	0	0	0	(3,209)
Employee Stock Purchase Plan ("ESPP"), amortized RSUs and other		7,544	$ 0	7,652	0	(108)	7,544	0
Employee Stock Purchase Plan (ESPP"), amortized RSUs and other (in shares)			9,008
Ending Balance at Jun. 30, 2019		$ 1,257,568	$ 468	568,264	(3,448)	642,124	1,207,408	50,160
Ending Balance (in shares) at Jun. 30, 2019		46,838,199	46,838,199
Beginning Balance at Mar. 31, 2019		$ 1,361,933	$ 468	566,497	(626)	746,100	1,312,439	49,494
Beginning Balance (in shares) at Mar. 31, 2019			46,812,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(93,961)	$ 0	0	0	(97,836)	(97,836)	3,875
Other comprehensive income (loss)		(2,822)	0	0	(2,822)	0	(2,822)	0
Purchases of common stock	[1]	(81)	$ 0	(81)	0	0	(81)	0
Purchases of common stock (in shares)	[1]		(1,987)
Restricted stock units (“RSUs”) vested		0	$ 0	0	0	0	0	0
Restricted stock units (“RSUs”) vested (in shares)			17,443
Dividends on common stock		(6,089)	$ 0	0	0	(6,089)	(6,089)	0
Transactions with non-controlling interests		(3,209)	0	0	0	0	0	(3,209)
Employee Stock Purchase Plan ("ESPP"), amortized RSUs and other		1,797	$ 0	1,848	0	(51)	1,797	0
Employee Stock Purchase Plan (ESPP"), amortized RSUs and other (in shares)			10,377
Ending Balance at Jun. 30, 2019		$ 1,257,568	$ 468	$ 568,264	$ (3,448)	$ 642,124	$ 1,207,408	$ 50,160
Ending Balance (in shares) at Jun. 30, 2019		46,838,199	46,838,199
[1]	Represents shares purchased in connection with employee tax withholding for RSUs vested under our 2012 Equity Incentive Plan.

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement Of Stockholders Equity [Abstract]
Dividend per share on common stock	$ 0.13	$ 0.13	$ 0.26	$ 0.26

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities
Net loss	$ (125,042)	$ (15,743)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, depletion and amortization	61,747	43,547
Gain on sales of property and equipment, net	(6,835)	(2,048)
Change in deferred income taxes	(35,192)	0
Stock-based compensation	7,221	10,193
Equity in net loss from unconsolidated joint ventures	105,834	13,418
Net income from affiliates	(3,884)	(3,758)
Other non-cash adjustments	4,630	0
Changes in assets and liabilities, net of the effects of acquisitions:
Receivables	(78,081)	(24,821)
Contract assets, net	(23,775)	(76,166)
Inventories	(12,905)	(9,526)
Contributions to unconsolidated construction joint ventures	(45,500)	(55,733)
Distributions from unconsolidated construction joint ventures	830	11,201
Other assets, net	(15,361)	4,192
Accounts payable	48,230	24,559
Accrued expenses and other current liabilities, net	24,568	5,240
Net cash used in operating activities	(93,515)	(75,445)
Investing activities
Purchases of marketable securities	0	(9,952)
Maturities of marketable securities	5,000	60,000
Purchases of property and equipment ($3,914 and $11,369 related to CCJVs)	(54,354)	(36,471)
Proceeds from sales of property and equipment	7,870	2,704
Cash paid to purchase businesses, net of cash and restricted cash acquired	(6,227)	(55,030)
Other investing activities, net	(215)	269
Net cash used in investing activities	(47,926)	(38,480)
Financing activities
Proceeds from debt	75,499	105,250
Debt principal repayments	(43,842)	(1,250)
Cash dividends paid	(12,152)	(10,389)
Repurchases of common stock	(3,948)	(6,165)
Distributions to non-controlling partners	(3,200)	(6,400)
Other financing activities, net	1,238	429
Net cash provided by financing activities	13,595	81,475
Net decrease in cash, cash equivalents and restricted cash	(127,846)	(32,450)
Cash and cash equivalents and restricted cash of $5,825 and $0 at beginning of each period	278,629	233,711
Cash, cash equivalents and restricted cash of $5,825 and $5,746 at end of each period	150,783	201,261
Supplementary Information
Right of use assets obtained in exchange for lease obligations	7,096	0
Cash paid for operating lease liabilities	4,582	0
Cash paid during the period for:
Interest	8,381	6,134
Income taxes	11,463	7,246
Non-cash investing and financing activities:
Common stock issued in acquisition	0	321,075
Premium on 8.0% Convertible Notes	0	30,702
RSUs issued, net of forfeitures	8,541	13,022
Accrued cash dividends	$ 6,089	$ 5,940

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Restricted cash and cash equivalents	$ 5,825	$ 5,746
Purchases of property and equipment	54,354	$ 36,471
8.0 % Convertible Notes [Member]
Debt Instrument Interest Rate Stated Percentage		8.00%
Equity Method Investee [Member] | Construction [Member]
Purchases of property and equipment	$ 3,914	$ 11,369

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1.  Basis of Presentation The condensed consolidated financial statements included herein have been prepared by Granite Construction Incorporated (“we,” “us,” “our,” “the Company” or “Granite”) pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), are unaudited and should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2018. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted. Further, the condensed consolidated financial statements reflect, in the opinion of management, all normal recurring adjustments necessary to state fairly our financial position at June 30, 2019 Our operations are typically affected more by weather conditions during the first and fourth quarters of our fiscal year which may alter our construction schedules and can create variability in our revenues and profitability. Therefore, the results of operations for the three and six months ended June 30, 2019 We prepared the accompanying condensed consolidated financial statements on the same basis as our annual consolidated financial statements, except for the adoption during the three months ended March 31, 2019 of Accounting Standards Update (“ASU”) No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income Leases . On May 22, 2019, we acquired certain assets and equipment of Lametti & Sons, Inc. a Minnesota-based company with expertise in cured-in-place pipe rehabilitation and trenchless renewal for $6.2 million cash. Cash, Cash Equivalents and Restricted Cash: The table below presents changes in cash, cash equivalents and restricted cash on the condensed consolidated statements of cash flows and a reconciliation to the amounts reported in the condensed consolidated balance sheets (in thousands). Six Months Ended June 30, 2019 2018 Cash and cash equivalents and restricted cash, beginning of period $ 278,629 $ 233,711 End of the period Cash and cash equivalents 144,958 195,515 Restricted cash 5,825 5,746 Total cash, cash equivalents and restricted cash, end of period 150,783 201,261 Net decrease in cash, cash equivalents and restricted cash $ (127,846 ) $ (32,450 )

Recently Issued and Adopted Acc

Recently Issued and Adopted Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Recently Issued and Adopted Accounting Pronouncements	2 .   Recently Issued and Adopted Accounting Pronouncements In August 2018, the Financial Accounting Standards Board (“ Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement We do not expect the adoption of this ASU to have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income Effect of adopting Topic 842 The core principle of Topic 842 requires lessees to recognize operating leases as right of use (“ROU”) assets and lease liabilities on the balance sheet as described below. Prior to adoption of Topic 842, we recognized operating lease payments as an expense on a straight-line basis over the lease term on our consolidated statements of operations and did not recognize ROU assets or lease liabilities on our consolidated balance sheets. We adopted Topic 842 using a modified retrospective transition approach with no prior-period retrospective adjustments, recognizing a net cumulative decrease to retained earnings and added ROU assets, short and long term lease liabilities of approximately $0.5 million, $72.2 million, $14.9 million and $60.4 million, respectively, as of January 1, 2019. We applied Topic 842 to all noncancelable operating leases outstanding as of January 1, 2019 except those related to quarry properties and those that at lease commencement have an actual and intended lease term shorter than twelve months. We elected to apply optional practical expedients which allowed us to forego reassessments of 1) whether any expired or existing contracts are or contain leases; 2) the lease classification for any expired or existing leases; and 3) the initial direct costs for any existing leases. In connection with the adoption of Topic 842, we implemented the following accounting policy: ROU Assets and Liabilities : A lease contract conveys the right to use an underlying asset for a period of time in exchange for consideration. At inception, we determine whether a contract contains a lease by determining if there is an identified asset and if the contract conveys the right to control the use of the identified asset in exchange for consideration over a period of time. At lease commencement, we measure and record a lease liability equal to the present value of the remaining lease payments, generally discounted using the borrowing rate on our secured debt as the implicit rate is not readily determinable on many of our leases. We use a single maturity discount rate if it is not materially different than the discount rates applied to each of the leases in the portfolio. On the lease commencement date, the amount of the ROU assets consist of the following: • the amount of the initial measurement of the lease liability; • any lease payments made at or before the commencement date, minus any lease incentives received; and • any initial direct costs incurred. Most of our lease contracts do not have the option to extend or renew. We assess the option for individual leases, and we generally consider the base term to be the term of lease contracts. On a quarterly basis, we determine if subcontractor, vendor or service provider agreements contain by assessing if an asset is explicitly or implicitly specified in the agreement and the counterparty has the right to substitute the asset.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Acquisitions	3.  Acquisitions On June 14, 2018 (the “acquisition date”), we completed the acquisition of the Layne Christensen Company (“Layne”). The financial information in the table below summarizes the combined results of operations of Granite and Layne, on a pro forma basis, as though the companies had been combined as of January 1, 2017 (in thousands, except per share amounts). The pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2017. Three Months Ended Six Months Ended June 30, 2018 Revenue $ 909,783 $ 1,583,073 Net income 16,834 14,454 Net income attributable to Granite 14,530 10,389 Basic net income per share attributable to common shareholders 0.32 0.23 Diluted net income per share attributable to common shareholders 0.30 0.22 These amounts have been calculated after applying Granite’s accounting policies and adjusting the results of Layne to reflect the additional depreciation and amortization that would have been recorded assuming the fair value adjustments to property and equipment and intangible assets had been applied starting on January 1, 2017. Acquisition and integration expenses related to Layne are excluded as the timing of the transaction is assumed to be January 1, 2017. The statutory tax rate of 26%

Revisions in Estimates

Revisions in Estimates	6 Months Ended
	Jun. 30, 2019
Change In Accounting Estimate [Abstract]
Revisions in Estimates	4.  Revisions in Estimates Our profit recognition related to construction contracts is based on estimates of transaction price and costs to complete each project. These estimates can vary significantly in the normal course of business as projects progress, circumstances develop and evolve, and uncertainties are resolved. When we experience significant changes in our estimates, we undergo a process that includes reviewing the nature of the changes to ensure that there are no material amounts that should have been recorded in a prior period rather than as revisions in estimates for the current period. For revisions in estimates, generally we use the cumulative catch-up method for changes to the transaction price that are part of a single performance obligation. Under this method, revisions in estimates are accounted for in their entirety in the period of change. There can be no assurance that we will not experience further changes in circumstances or otherwise be required to revise our estimates in the future. In our review of these changes for the three and six months ended June 30, 2018 June 30, 2019 For the three and six months ended June 30, 2019 , revisions in estimates, including estimated cost recovery of customer affirmative claims and back charges, that individually had an impact of $5.0 million or more on gross profit resulted in decreases to gross profit and loss before (benefit from) provision for income taxes of $161.1 million and $167.8 million , respectively, and decreases in net loss of $ 120.2 million and $ 125.4 million ($ 2.57 and $ 2.68 per share), respectively. For the three and six months ended June 30, 2018, r Decreases for all periods presented were in our Transportation segment. There were no increases from revisions in estimates, which individually had an impact of $5.0 million or more on gross profit, for the periods presented The impact to gross profit is summarized as follows: Three Months Ended June 30, Six Months Ended June 30, (dollars in millions) 2019 2018 2019 2018 Number of projects with downward estimate changes 5 2 5 3 Range of reduction in gross profit from each project, net $ 7.5 - 77.3 $ 14.5 - 15.7 $ 8.5 - 77.3 $ 5.2 - 18.3 Decrease to project profitability $ 161.1 $ 30.2 $ 167.8 $ 38.0 The decreases during the three and six months ended June 30, 2019 were due to increased project completion costs, schedule delays, execution of a significant amount of disputed work as well as additional weather-related costs

Disaggregation of Revenue

Disaggregation of Revenue	6 Months Ended
	Jun. 30, 2019
Disaggregation Of Revenue [Abstract]
Disaggregation of Revenue	5.  Disaggregation of Revenue The following tables present our disaggregated revenue (in thousands): Three Months Ended June 30, Transportation Water Specialty Materials Total 2019 California $ 138,411 $ 2,634 $ 42,980 $ 50,962 $ 234,987 Federal 51 371 18,523 — 18,945 Heavy Civil 77,009 3,381 — — 80,390 Midwest 28,135 — 39,582 — 67,717 Northwest 160,372 1,349 48,676 40,846 251,243 Water and Mineral Services — 105,096 25,323 5,839 136,258 Total $ 403,978 $ 112,831 $ 175,084 $ 97,647 $ 789,540 2018 California $ 156,344 $ 4,553 $ 41,899 $ 55,194 $ 257,990 Federal 101 627 10,210 — 10,938 Heavy Civil 192,598 5,478 — — 198,076 Midwest 22,113 1,020 59,468 — 82,601 Northwest 131,555 1,524 40,265 43,621 216,965 Water and Mineral Services — 38,416 — 2,133 40,549 Total $ 502,711 $ 51,618 $ 151,842 $ 100,948 $ 807,119 Six Months Ended June 30, Transportation Water Specialty Materials Total 2019 California $ 207,924 $ 4,000 $ 75,137 $ 74,027 $ 361,088 Federal 77 879 33,725 — 34,681 Heavy Civil 271,980 7,915 — — 279,895 Midwest 46,196 84 75,470 — 121,750 Northwest 216,011 2,580 80,868 55,378 354,837 Water and Mineral Services — 196,628 50,577 9,885 257,090 Total $ 742,188 $ 212,086 $ 315,777 $ 139,290 $ 1,409,341 2018 California $ 272,914 $ 33,592 $ 73,201 $ 88,182 $ 467,889 Federal 358 1,118 14,257 — 15,733 Heavy Civil 371,462 9,700 — — 381,162 Midwest 38,455 1,516 114,912 — 154,883 Northwest 178,667 2,391 67,943 56,355 305,356 Water and Mineral Services — 43,342 — 2,133 45,475 Total $ 861,856 $ 91,659 $ 270,313 $ 146,670 $ 1,370,498

Unearned Revenue

Unearned Revenue	6 Months Ended
	Jun. 30, 2019
Deferred Revenue Disclosure [Abstract]
Unearned Revenue	6.  Unearned Revenue The following tables present our unearned revenue as of the respective periods (in thousands): June 30, 2019 Transportation Water Specialty Total California $ 590,641 $ 14,382 $ 119,152 $ 724,175 Northwest 374,148 710 93,411 468,269 Heavy Civil 1,751,819 12,146 — 1,763,965 Federal 80 1,350 146,516 147,946 Midwest 204,749 110 158,378 363,237 Water and Mineral Services — 224,720 — 224,720 Total $ 2,921,437 $ 253,418 $ 517,457 $ 3,692,312 March 31, 2019 California $ 402,482 $ 7,314 $ 66,089 $ 475,885 Northwest 344,414 1,759 71,878 418,051 Heavy Civil 1,311,518 17,173 — 1,328,691 Federal 19 — 137,592 137,611 Midwest 128,867 143 180,449 309,459 Water and Mineral Services — 193,914 — 193,914 Total $ 2,187,300 $ 220,303 $ 456,008 $ 2,863,611 June 30, 2018 California $ 332,252 $ 17,485 $ 47,601 $ 397,338 Northwest 315,189 206 68,461 383,856 Heavy Civil 1,882,806 32,214 — 1,915,020 Federal 26 — 161,073 161,099 Midwest 64,191 625 268,809 333,625 Water and Mineral Services — 225,402 — 225,402 Total $ 2,594,464 $ 275,932 $ 545,944 $ 3,416,340

Contract Assets and Liabilities

Contract Assets and Liabilities	6 Months Ended
	Jun. 30, 2019
Revenue From Contract With Customer [Abstract]
Contract Assets and Liabilities	7.  Contract Assets and Liabilities During the three and six months ended June 30, 2019 2018 As a result of changes in contract transaction price related to performance obligations that were satisfied or partially satisfied prior to the end of the periods, we recognized revenue of $43.5 million and $84.8 million during the three and six months ended June 30, 2019 As of June 30, 2019 , t The components of the contract asset balances as of the respective dates were as follows (in thousands): June 30, 2019 December 31, 2018 June 30, 2018 Costs in excess of billings and estimated earnings $ 161,500 $ 120,223 $ 161,670 Contract retention 96,150 99,531 103,520 Total contract assets $ 257,650 $ 219,754 $ 265,190 As of June 30, 2019 The components of the contract liability balances as of the respective dates were as follows (in thousands): June 30, 2019 December 31, 2018 June 30, 2018 Billings in excess of costs and estimated earnings, net of retention $ 117,029 $ 103,250 $ 91,147 Provisions for losses 2,260 2,199 717 Total contract liabilities $ 119,289 $ 105,449 $ 91,864

Receivables, Net

Receivables, Net	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Receivables, Net	8.  Receivables, net (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Contracts completed and in progress: Billed $ 313,185 $ 285,521 $ 340,548 Unbilled 163,950 98,755 71,464 Total contracts completed and in progress 477,135 384,276 412,012 Material sales 61,204 45,286 64,128 Other 14,260 44,195 16,644 Total gross receivables 552,599 473,757 492,784 Less: allowance for doubtful accounts 641 511 66 Total net receivables $ 551,958 $ 473,246 $ 492,718 Receivables include billed and unbilled amounts for services provided to clients for which we have an unconditional right to payment as of the end of the applicable period and do not bear interest. Included in other receivables at June 30, 2019

Marketable Securities

Marketable Securities	6 Months Ended
	Jun. 30, 2019
Marketable Securities [Abstract]
Marketable Securities	9.  Marketable Securities All marketable securities were classified as held-to-maturity as of the dates presented and the carrying amounts of held-to-maturity securities were as follows: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 U.S. Government and agency obligations $ 41,037 $ 24,996 $ 15,000 Corporate bonds — 5,006 5,014 Total short-term marketable securities 41,037 30,002 20,014 U.S. Government and agency obligations 20,000 36,098 61,191 Total long-term marketable securities 20,000 36,098 61,191 Total marketable securities $ 61,037 $ 66,100 $ 81,205 Scheduled maturities of held-to-maturity investments were as follows: (in thousands) June 30, 2019 Due within one year $ 41,037 Due in one to five years 20,000 Total $ 61,037

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	10.  Fair Value Measurement The following tables summarize significant assets and liabilities measured at fair value in the condensed consolidated balance sheets on a recurring basis for each of the fair value levels (in thousands): Fair Value Measurement at Reporting Date Using June 30, 2019 Level 1 Level 2 Level 3 Total Cash equivalents Money market funds $ 17,790 $ — $ — $ 17,790 Other noncurrent assets Restricted cash 5,825 — — 5,825 Total assets $ 23,615 $ — $ — $ 23,615 Other current liabilities Interest rate cash flow hedge $ — $ 4,985 $ — $ 4,985 Total liabilities $ — $ 4,985 $ — $ 4,985 December 31, 2018 Cash equivalents Money market funds $ 84,613 $ — $ — $ 84,613 Other noncurrent assets Restricted cash 5,825 — — 5,825 Total assets $ 90,438 $ — $ — $ 90,438 Other current liabilities Interest rate cash flow hedge $ — $ 1,098 $ — $ 1,098 Total liabilities $ — $ 1,098 $ — $ 1,098 June 30, 2018 Cash equivalents Money market funds $ 56,534 $ — $ — $ 56,534 Other current assets Interest rate cash flow hedge — 473 — 473 Other noncurrent assets Restricted cash 5,746 — — 5,746 Total assets $ 62,280 $ 473 $ — $ 62,753 Commodity Swap In February 2019, we entered into a commodity swap designated as cash flow hedge covering the periods from March to October 2019 with an original notional amount of $8.7 million which represented approximately 60.0% of our forecasted purchases for fixed price asphalt during these periods The commodity swap is reported at fair value using Level 2 inputs in the condensed consolidated balance sheets. Gains or losses on the effective portion are initially reported as a component of AOCI and subsequently reclassified to cost of revenue in the condensed consolidated statements of operations when the monthly hedged commodity payment is settled. As of June 30, 2019, the During the three and six months ended June 30, 2019, the unrealized gain, net of taxes, on the effective portion was immaterial, there was no ineffective portion, the cost of revenue reclassified from AOCI was immaterial and we estimate an immaterial amount to be reclassified from AOCI into pre-tax earnings within the next twelve months. Other Assets and Liabilities The carrying values and estimated fair values of our financial instruments that are not required to be recorded at fair value in the condensed consolidated balance sheets were as follows: June 30, 2019 December 31, 2018 June 30, 2018 (in thousands) Fair Value Hierarchy Carrying Value Fair Value Carrying Value Fair Value Carrying Value Fair Value Assets: Held-to-maturity marketable securities Level 1 $ 61,037 $ 60,887 $ 66,100 $ 65,290 $ 81,205 $ 80,006 Liabilities (including current maturities): 2019 Notes 1 Level 3 $ 40,000 $ 40,571 $ 40,000 $ 40,484 $ 80,000 $ 81,307 Credit Agreement - term loan 1 Level 3 142,500 143,109 146,250 147,141 150,000 150,608 Credit Agreement - revolving credit facility 1 Level 3 220,000 220,597 197,000 197,889 99,000 99,267 Convertible notes Level 1 — — — — 160,765 186,410 1 During the three and six months ended June 30, 2019

Construction Joint Ventures

Construction Joint Ventures	6 Months Ended
	Jun. 30, 2019
Construction And Line Item Joint Ventures [Abstract]
Construction and Line Item Joint Ventures	11.  Construction Joint Ventures We participate in various construction joint ventures. We have determined that certain of these joint ventures are consolidated because they are variable interest entities (“VIEs”) and we are the primary beneficiary. We continually evaluate whether there are changes in the status of the VIEs or changes to the primary beneficiary designation of the VIE. Based on our assessments during the three months ended June 30, 2019 Due to the joint and several nature of the performance obligations under the related owner contracts, if any of the partners fail to perform, we and the remaining partners, if any, would be responsible for performance of the outstanding work (i.e., we provide a performance guarantee). At June 30, 2019 Consolidated Construction Joint Ventures (“CCJVs”) At June 30, 2019 June 30, 2019 Unconsolidated Construction Joint Ventures As of June 30, 2019 June 30, 2019 The following is summary financial information related to unconsolidated construction joint ventures: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Assets Cash, cash equivalents and marketable securities $ 225,163 $ 229,562 $ 309,330 Other current assets 1 960,406 814,979 701,945 Noncurrent assets 214,238 204,090 211,963 Less partners’ interest 929,332 822,215 792,567 Granite’s interest 1,2 470,475 426,416 430,671 Liabilities Current liabilities 530,654 525,036 535,700 Less partners’ interest and adjustments 3 243,241 369,782 342,760 Granite’s interest 287,413 155,254 192,940 Equity in construction joint ventures 4 $ 183,062 $ 271,162 $ 237,731 1 June 30, 2019 2 June 30, 2019 3 4 Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Revenue Total $ 436,071 $ 449,996 $ 852,005 $ 689,437 Less partners’ interest and adjustments 1 399,227 340,809 682,668 461,841 Granite’s interest 36,844 109,187 169,337 227,596 Cost of revenue Total 456,484 423,385 867,969 804,274 Less partners’ interest and adjustments 1 312,455 296,250 592,461 562,751 Granite’s interest 144,029 127,135 275,508 241,523 Granite’s interest in gross loss $ (107,185 ) $ (17,948 ) $ (106,171 ) $ (13,927 ) 1 During the three and six months ended June 30, 2019

Investments in Affiliates

Investments in Affiliates	6 Months Ended
	Jun. 30, 2019
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Investments in Affiliates	1 2 .   Investments in Affiliates Our investments in affiliates balance consists of equity method investments in the following types of entities: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Foreign $ 55,563 $ 55,715 $ 63,000 Real estate 17,781 19,676 27,591 Asphalt terminal 8,765 8,963 8,904 Total investments in affiliates $ 82,109 $ 84,354 $ 99,495 The following table provides summarized balance sheet information for our affiliates accounted for under the equity method on a combined basis: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Current assets $ 138,564 $ 141,930 $ 136,953 Noncurrent assets 182,561 170,172 173,384 Total assets 321,125 312,102 310,337 Current liabilities 70,435 55,816 54,710 Long-term liabilities 1 70,381 63,098 54,383 Total liabilities 140,816 118,914 109,093 Net assets 180,309 193,188 201,244 Granite’s share of net assets $ 82,109 $ 84,354 $ 99,495 1 Of the $321.1 million in total assets as of June 30, 2019 June 30, 2019 June 30, 2019

Property and Equipment, Net

Property and Equipment, Net	6 Months Ended
	Jun. 30, 2019
Property Plant And Equipment [Abstract]
Property and Equipment, Net	13.  Property and Equipment, net Balances of major classes of assets and allowances for depreciation and depletion are included in property and equipment, net in the condensed consolidated balance sheets and were as follows: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Equipment and vehicles $ 943,456 $ 906,275 $ 933,951 Quarry property 191,972 180,246 178,809 Land and land improvements 134,151 142,271 141,549 Buildings and leasehold improvements 109,356 108,884 105,038 Office furniture and equipment 66,587 65,680 63,806 Property and equipment 1,445,522 1,403,356 1,423,153 Less: accumulated depreciation and depletion 888,404 853,668 827,366 Property and equipment, net $ 557,118 $ 549,688 $ 595,787

Long-Term Debt and Credit Arran

Long-Term Debt and Credit Arrangements	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Long-Term Debt and Credit Arrangements	14.   Long-Term Debt and Credit Arrangements (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Senior notes payable $ 40,000 $ 40,000 $ 80,000 Credit Agreement term loan 142,500 146,250 150,000 Credit Agreement revolving credit loan 220,000 197,000 99,000 Convertible notes — — 160,765 Other 12,793 (845 ) (1,073 ) Total debt 415,293 382,405 488,692 Less current maturities 48,397 47,286 207,982 Total long-term debt $ 366,896 $ 335,119 $ 280,710 The aggregate minimum principal maturities of long-term debt, including current maturities and excluding debt issuance costs, related to balances at June 30, 2019 in 2020 Senior Notes Payable Senior notes payable as of both June 30, 2019 June 30, 2019 Credit Agreement Granite entered into the Third Amended and Restated Credit Agreement dated May 31, 2018 (the “Credit Agreement”). The Credit Agreement provided for a $150.0 million term loan, of which $142.5 million was outstanding on June 30, 2019, and a $350.0 million revolving credit facility. We entered into the Amendment No. 1 to Third Amended and Restated Credit Agreement dated July 29, 2019 as discussed below. The term loan requires that Granite repay 1.25% of the principal balance each quarter until the maturity date, at which point the remaining balance is due. As of each June 30, 2019 As of June 30, 2019 June 30, 2019 June 30, 2019 Borrowings under the Credit Agreement bear interest at LIBOR or a base rate (at our option), plus an applicable margin based on the Consolidated Leverage Ratio (as defined in the Credit Agreement) calculated quarterly. The applicable margin was 1.75% for loans bearing interest based on LIBOR and 0.75% for loans bearing interest at the base rate at June 30, 2019 June 30, 2019 As of June 30, 2019 Covenants and Events of Default Our Credit Agreement requires us to comply with various affirmative, restrictive and financial covenants. Our failure to comply with any of these covenants, or to pay principal, interest or other amounts when due thereunder, would constitute an event of default under the applicable agreements. The most significant restrictive financial covenants under the terms of the Credit Agreement require the maintenance of a minimum Consolidated Interest Coverage Ratio and a maximum Consolidated Leverage Ratio. On July 29, 2019, the Company entered into Amendment No. 1 (the “Amendment”) to the Credit Agreement, which modified certain conditions of these financial covenants. As of June 30, 2019 and pursuant to the definitions in the Amendment and the Credit Agreement, the Consolidated Interest Coverage Ratio was 11.28, which exceeded the minimum of 4.00, and the Consolidated Leverage Ratio was 2.09, which did not exceed the maximum of 3.25. As of June 30, 2019, we were compliant with the financial covenants contained in the Amendment No. 1 to Third Amended and Restated Credit Agreement . We called and redeemed the $40.0 million outstanding balance of the 2019 Notes on July 29, 2019 which were originally due in December 2019.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	15.  Leases We have leases for office and shop space, as well as for equipment primarily utilized in our construction projects. As of June 30, 2019, our lease contracts were classified as operating leases and had terms ranging from month-to-month to 29 years. ROU assets . we had no lease contracts that had not yet commenced but created significant rights and obligations and Lease expense was $4.6 million and $8.9 million during the three and six months ended June 30, 2019, which included operating lease costs related to short-term leases and variable lease costs. As of June 30, 2019, our weighted-average remaining lease term was 6.3 years and the weighted-average discount rate was 4.08%. As of June 30, 2019, the lease liability is equal to the present value of the remaining lease payments, discounted using the incremental borrowing rate on our secured debt using a single maturity discount rate as it is not materially different than the discount rates applied to each of the leases in the portfolio. The following table summarizes our undiscounted lease liabilities outstanding as of June 30, 2019 Remainder of 2019 $ 9,543 2020 18,541 2021 17,303 2022 15,222 2023 10,268 2024 through 2035 20,790 Total future minimum lease payments $ 91,667 Less: imputed interest 15,219 Total $ 76,448

Weighted Average Shares Outstan

Weighted Average Shares Outstanding and Net Loss Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Weighted Average Shares Outstanding and Net Loss Per Share	16.  Weighted Average Shares Outstanding and Net Loss Per Share The following table presents a reconciliation of the weighted average shares outstanding used in calculating basic and diluted net loss per share as well as the calculation of basic and diluted net loss per share: Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per share amounts) 2019 2018 2019 2018 Numerator (basic and diluted) Net loss allocated to common shareholders for basic calculation $ (97,836 ) $ (8,385 ) $ (132,410 ) $ (19,808 ) Denominator Weighted average common shares outstanding, basic 46,824 41,044 46,762 40,074 Dilutive effect of RSUs 1 — — — — Weighted average common shares outstanding, diluted 46,824 41,044 46,762 40,074 Net loss per share, basic $ (2.09 ) $ (0.20 ) $ (2.83 ) $ (0.49 ) Net loss per share, diluted $ (2.09 ) $ (0.20 ) $ (2.83 ) $ (0.49 ) 1

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	17 . The following table presents the (benefit from) provision for income taxes for the respective periods: Three Months Ended June 30, Six Months Ended June 30, (dollars in thousands) 2019 2018 2019 2018 (Benefit from) provision for income taxes $ (31,760 ) $ 2,796 $ (40,925 ) $ (1,335 ) Effective tax rate 25.3 % (85.1 )% 24.7 % 7.8 % Our effective tax rate for the three and six months ended June 30, 2019 increased to 25.3% from (85.1)% and to 24.7% from 7.8%, respectively, when compared to the same periods in 2018. This change was primarily due to a discrete tax benefit on the decrease to project profitability recorded in the second quarter of 2019 as it related to four legacy, unconsolidated heavy civil joint venture projects compared to a discrete tax expense on one-time nondeductible acquisition and integration expenses recorded in the second quarter of 2018. Of the $161.1 million decrease to project profitability for the three months ended June 30, 2019 (see Note 4), $143.7 million is discrete to the second quarter of 2019 which resulted in a discrete tax benefit of $37.0 million.

Legal Proceedings

Legal Proceedings	6 Months Ended
	Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Legal Proceedings	1 8 .   Legal Proceedings In the ordinary course of business, we and our affiliates are involved in various legal proceedings alleging, among other things, liability issues or breach of contract or tortious conduct in connection with the performance of services and/or materials provided, the various outcomes of which cannot be predicted with certainty. We and our affiliates are also subject to government inquiries in the ordinary course of business seeking information concerning our compliance with government construction contracting requirements and various laws and regulations, the outcomes which cannot be predicted with certainty. Some of the matters in which we or our joint ventures and affiliates are involved may involve compensatory, punitive, or other claims or sanctions that, if granted, could require us to pay damages or make other expenditures in amounts that are not probable to be incurred or cannot currently be reasonably estimated. In addition, in some circumstances our government contracts could be terminated, we could be suspended, debarred or incur other administrative penalties or sanctions, or payment of our costs could be disallowed. While any of our pending legal proceedings may be subject to early resolution as a result of our ongoing efforts to resolve the proceedings, whether or when any legal proceeding will be resolved is neither predictable nor guaranteed. Accordingly, it is possible that future developments in such proceedings and inquiries could require us to (i) adjust existing accruals, or (ii) record new accruals that we did not originally believe to be probable or that could not be reasonably estimated. Such changes could be material to our financial condition, results of operations and/or cash flows in any particular reporting period. In addition to matters that are considered probable for which the loss can be reasonably estimated, disclosure is also provided when it is reasonably possible and estimable that a loss will be incurred or when it is reasonably possible that the amount of a loss will exceed the amount recorded. Liabilities relating to legal proceedings and government inquiries, to the extent that we have concluded such liabilities are probable and the amounts of such liabilities are reasonably estimable, are recorded in our condensed consolidated balance sheets. The aggregate liabilities recorded as of June 30, 2019

Business Segment Information

Business Segment Information	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Business Segment Information	19.  Business Segment Information Summarized segment information is as follows (in thousands): Three Months Ended June 30, Transportation Water Specialty Materials Total 2019 Total revenue from reportable segments $ 403,978 $ 112,831 $ 175,084 $ 143,010 $ 834,903 Elimination of intersegment revenue — — — (45,363 ) (45,363 ) Revenue from external customers 403,978 112,831 175,084 97,647 789,540 Gross (loss) profit (99,879 ) 11,263 22,210 14,002 (52,404 ) Depreciation, depletion and amortization 4,845 10,931 8,401 6,054 30,231 2018 Total revenue from reportable segments $ 502,711 $ 51,618 $ 151,842 $ 146,197 $ 852,368 Elimination of intersegment revenue — — — (45,249 ) (45,249 ) Revenue from external customers 502,711 51,618 151,842 100,948 807,119 Gross profit 35,963 5,450 21,476 17,480 80,369 Depreciation, depletion and amortization 5,373 4,378 9,212 6,074 25,037 Six Months Ended June 30, Transportation Water Specialty Materials Total 2019 Total revenue from reportable segments $ 742,188 $ 212,086 $ 315,777 $ 192,243 $ 1,462,294 Elimination of intersegment revenue — — — (52,953 ) (52,953 ) Revenue from external customers 742,188 212,086 315,777 139,290 1,409,341 Gross (loss) profit (78,629 ) 19,382 37,077 10,244 (11,926 ) Depreciation, depletion and amortization 8,485 21,987 14,213 11,633 56,318 Segment assets 350,679 302,294 148,441 376,619 1,178,033 2018 Total revenue from reportable segments $ 861,856 $ 91,659 $ 270,313 $ 199,519 $ 1,423,347 Elimination of intersegment revenue — — — (52,849 ) (52,849 ) Revenue from external customers 861,856 91,659 270,313 146,670 1,370,498 Gross profit 67,425 17,014 37,212 15,001 136,652 Depreciation, depletion and amortization 10,393 4,884 11,339 11,484 38,100 Segment assets 426,698 359,141 157,313 304,121 1,247,273 As of June 30, 2019 June 30, 2019 A reconciliation of segment gross (loss) profit to consolidated loss before provision for (benefit from) income taxes is as follows: Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Total gross (loss) profit from reportable segments $ (52,404 ) $ 80,369 $ (11,926 ) $ 136,652 Selling, general and administrative expenses 69,998 61,316 151,153 122,568 Acquisition and integration expenses 9,177 26,287 12,500 34,696 Gain on sales of property and equipment (4,935 ) (1,505 ) (6,835 ) (2,048 ) Total other income (923 ) (2,444 ) (2,777 ) (1,486 ) Loss before (benefit from) provision for income taxes $ (125,721 ) $ (3,285 ) $ (165,967 ) $ (17,078 )

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Cash, Cash Equivalents and Restricted Cash	Cash, Cash Equivalents and Restricted Cash: The table below presents changes in cash, cash equivalents and restricted cash on the condensed consolidated statements of cash flows and a reconciliation to the amounts reported in the condensed consolidated balance sheets (in thousands). Six Months Ended June 30, 2019 2018 Cash and cash equivalents and restricted cash, beginning of period $ 278,629 $ 233,711 End of the period Cash and cash equivalents 144,958 195,515 Restricted cash 5,825 5,746 Total cash, cash equivalents and restricted cash, end of period 150,783 201,261 Net decrease in cash, cash equivalents and restricted cash $ (127,846 ) $ (32,450 )

Basis of Presentation (Tables)

Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Summary of Reconciliation of Cash, Cash Equivalents, and Restricted Cash Reported in the Condensed Consolidated Balance Sheets	The table below presents changes in cash, cash equivalents and restricted cash on the condensed consolidated statements of cash flows and a reconciliation to the amounts reported in the condensed consolidated balance sheets (in thousands). Six Months Ended June 30, 2019 2018 Cash and cash equivalents and restricted cash, beginning of period $ 278,629 $ 233,711 End of the period Cash and cash equivalents 144,958 195,515 Restricted cash 5,825 5,746 Total cash, cash equivalents and restricted cash, end of period 150,783 201,261 Net decrease in cash, cash equivalents and restricted cash $ (127,846 ) $ (32,450 )

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Schedule of Pro Forma Financial Information	The financial information in the table below summarizes the combined results of operations of Granite and Layne, on a pro forma basis, as though the companies had been combined as of January 1, 2017 (in thousands, except per share amounts). The pro forma financial information is presented for informational purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place on January 1, 2017. Three Months Ended Six Months Ended June 30, 2018 Revenue $ 909,783 $ 1,583,073 Net income 16,834 14,454 Net income attributable to Granite 14,530 10,389 Basic net income per share attributable to common shareholders 0.32 0.23 Diluted net income per share attributable to common shareholders 0.30 0.22

Revisions in Estimates (Tables)

Revisions in Estimates (Tables)	6 Months Ended
	Jun. 30, 2019
Change In Accounting Estimate [Abstract]
Summary of Impact of Revisions in Estimates on Gross Profit	The impact to gross profit is summarized as follows: Three Months Ended June 30, Six Months Ended June 30, (dollars in millions) 2019 2018 2019 2018 Number of projects with downward estimate changes 5 2 5 3 Range of reduction in gross profit from each project, net $ 7.5 - 77.3 $ 14.5 - 15.7 $ 8.5 - 77.3 $ 5.2 - 18.3 Decrease to project profitability $ 161.1 $ 30.2 $ 167.8 $ 38.0

Disaggregation of Revenue (Tabl

Disaggregation of Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Disaggregation Of Revenue [Abstract]
Schedule of Disaggregation of Revenue	The following tables present our disaggregated revenue (in thousands): Three Months Ended June 30, Transportation Water Specialty Materials Total 2019 California $ 138,411 $ 2,634 $ 42,980 $ 50,962 $ 234,987 Federal 51 371 18,523 — 18,945 Heavy Civil 77,009 3,381 — — 80,390 Midwest 28,135 — 39,582 — 67,717 Northwest 160,372 1,349 48,676 40,846 251,243 Water and Mineral Services — 105,096 25,323 5,839 136,258 Total $ 403,978 $ 112,831 $ 175,084 $ 97,647 $ 789,540 2018 California $ 156,344 $ 4,553 $ 41,899 $ 55,194 $ 257,990 Federal 101 627 10,210 — 10,938 Heavy Civil 192,598 5,478 — — 198,076 Midwest 22,113 1,020 59,468 — 82,601 Northwest 131,555 1,524 40,265 43,621 216,965 Water and Mineral Services — 38,416 — 2,133 40,549 Total $ 502,711 $ 51,618 $ 151,842 $ 100,948 $ 807,119 Six Months Ended June 30, Transportation Water Specialty Materials Total 2019 California $ 207,924 $ 4,000 $ 75,137 $ 74,027 $ 361,088 Federal 77 879 33,725 — 34,681 Heavy Civil 271,980 7,915 — — 279,895 Midwest 46,196 84 75,470 — 121,750 Northwest 216,011 2,580 80,868 55,378 354,837 Water and Mineral Services — 196,628 50,577 9,885 257,090 Total $ 742,188 $ 212,086 $ 315,777 $ 139,290 $ 1,409,341 2018 California $ 272,914 $ 33,592 $ 73,201 $ 88,182 $ 467,889 Federal 358 1,118 14,257 — 15,733 Heavy Civil 371,462 9,700 — — 381,162 Midwest 38,455 1,516 114,912 — 154,883 Northwest 178,667 2,391 67,943 56,355 305,356 Water and Mineral Services — 43,342 — 2,133 45,475 Total $ 861,856 $ 91,659 $ 270,313 $ 146,670 $ 1,370,498

Unearned Revenue (Tables)

Unearned Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Deferred Revenue Disclosure [Abstract]
Schedule Of Unearned Revenue	The following tables present our unearned revenue as of the respective periods (in thousands): June 30, 2019 Transportation Water Specialty Total California $ 590,641 $ 14,382 $ 119,152 $ 724,175 Northwest 374,148 710 93,411 468,269 Heavy Civil 1,751,819 12,146 — 1,763,965 Federal 80 1,350 146,516 147,946 Midwest 204,749 110 158,378 363,237 Water and Mineral Services — 224,720 — 224,720 Total $ 2,921,437 $ 253,418 $ 517,457 $ 3,692,312 March 31, 2019 California $ 402,482 $ 7,314 $ 66,089 $ 475,885 Northwest 344,414 1,759 71,878 418,051 Heavy Civil 1,311,518 17,173 — 1,328,691 Federal 19 — 137,592 137,611 Midwest 128,867 143 180,449 309,459 Water and Mineral Services — 193,914 — 193,914 Total $ 2,187,300 $ 220,303 $ 456,008 $ 2,863,611 June 30, 2018 California $ 332,252 $ 17,485 $ 47,601 $ 397,338 Northwest 315,189 206 68,461 383,856 Heavy Civil 1,882,806 32,214 — 1,915,020 Federal 26 — 161,073 161,099 Midwest 64,191 625 268,809 333,625 Water and Mineral Services — 225,402 — 225,402 Total $ 2,594,464 $ 275,932 $ 545,944 $ 3,416,340

Contract Assets and Liabiliti_2

Contract Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Contract With Customer Asset And Liability [Abstract]
Component of and Changes in Contract Asset and Liability Balances	The components of the contract asset balances as of the respective dates were as follows (in thousands): June 30, 2019 December 31, 2018 June 30, 2018 Costs in excess of billings and estimated earnings $ 161,500 $ 120,223 $ 161,670 Contract retention 96,150 99,531 103,520 Total contract assets $ 257,650 $ 219,754 $ 265,190 The components of the contract liability balances as of the respective dates were as follows (in thousands): June 30, 2019 December 31, 2018 June 30, 2018 Billings in excess of costs and estimated earnings, net of retention $ 117,029 $ 103,250 $ 91,147 Provisions for losses 2,260 2,199 717 Total contract liabilities $ 119,289 $ 105,449 $ 91,864

Receivables, Net (Tables)

Receivables, Net (Tables)	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Summary of Receivables	(in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Contracts completed and in progress: Billed $ 313,185 $ 285,521 $ 340,548 Unbilled 163,950 98,755 71,464 Total contracts completed and in progress 477,135 384,276 412,012 Material sales 61,204 45,286 64,128 Other 14,260 44,195 16,644 Total gross receivables 552,599 473,757 492,784 Less: allowance for doubtful accounts 641 511 66 Total net receivables $ 551,958 $ 473,246 $ 492,718

Marketable Securities (Tables)

Marketable Securities (Tables)	6 Months Ended
	Jun. 30, 2019
Marketable Securities [Abstract]
Held-to-maturity Securities	All marketable securities were classified as held-to-maturity as of the dates presented and the carrying amounts of held-to-maturity securities were as follows: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 U.S. Government and agency obligations $ 41,037 $ 24,996 $ 15,000 Corporate bonds — 5,006 5,014 Total short-term marketable securities 41,037 30,002 20,014 U.S. Government and agency obligations 20,000 36,098 61,191 Total long-term marketable securities 20,000 36,098 61,191 Total marketable securities $ 61,037 $ 66,100 $ 81,205 Scheduled maturities of held-to-maturity investments were as follows: (in thousands) June 30, 2019 Due within one year $ 41,037 Due in one to five years 20,000 Total $ 61,037

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables summarize significant assets and liabilities measured at fair value in the condensed consolidated balance sheets on a recurring basis for each of the fair value levels (in thousands): Fair Value Measurement at Reporting Date Using June 30, 2019 Level 1 Level 2 Level 3 Total Cash equivalents Money market funds $ 17,790 $ — $ — $ 17,790 Other noncurrent assets Restricted cash 5,825 — — 5,825 Total assets $ 23,615 $ — $ — $ 23,615 Other current liabilities Interest rate cash flow hedge $ — $ 4,985 $ — $ 4,985 Total liabilities $ — $ 4,985 $ — $ 4,985 December 31, 2018 Cash equivalents Money market funds $ 84,613 $ — $ — $ 84,613 Other noncurrent assets Restricted cash 5,825 — — 5,825 Total assets $ 90,438 $ — $ — $ 90,438 Other current liabilities Interest rate cash flow hedge $ — $ 1,098 $ — $ 1,098 Total liabilities $ — $ 1,098 $ — $ 1,098 June 30, 2018 Cash equivalents Money market funds $ 56,534 $ — $ — $ 56,534 Other current assets Interest rate cash flow hedge — 473 — 473 Other noncurrent assets Restricted cash 5,746 — — 5,746 Total assets $ 62,280 $ 473 $ — $ 62,753
Schedule of Carrying and Fair Value Amounts	The carrying values and estimated fair values of our financial instruments that are not required to be recorded at fair value in the condensed consolidated balance sheets were as follows: June 30, 2019 December 31, 2018 June 30, 2018 (in thousands) Fair Value Hierarchy Carrying Value Fair Value Carrying Value Fair Value Carrying Value Fair Value Assets: Held-to-maturity marketable securities Level 1 $ 61,037 $ 60,887 $ 66,100 $ 65,290 $ 81,205 $ 80,006 Liabilities (including current maturities): 2019 Notes 1 Level 3 $ 40,000 $ 40,571 $ 40,000 $ 40,484 $ 80,000 $ 81,307 Credit Agreement - term loan 1 Level 3 142,500 143,109 146,250 147,141 150,000 150,608 Credit Agreement - revolving credit facility 1 Level 3 220,000 220,597 197,000 197,889 99,000 99,267 Convertible notes Level 1 — — — — 160,765 186,410 1

Construction Joint Ventures (Ta

Construction Joint Ventures (Tables)	6 Months Ended
	Jun. 30, 2019
Construction And Line Item Joint Ventures [Abstract]
Schedule of Unconsolidated Joint Ventures Assets and Liabilities	The following is summary financial information related to unconsolidated construction joint ventures: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Assets Cash, cash equivalents and marketable securities $ 225,163 $ 229,562 $ 309,330 Other current assets 1 960,406 814,979 701,945 Noncurrent assets 214,238 204,090 211,963 Less partners’ interest 929,332 822,215 792,567 Granite’s interest 1,2 470,475 426,416 430,671 Liabilities Current liabilities 530,654 525,036 535,700 Less partners’ interest and adjustments 3 243,241 369,782 342,760 Granite’s interest 287,413 155,254 192,940 Equity in construction joint ventures 4 $ 183,062 $ 271,162 $ 237,731 1 June 30, 2019 2 June 30, 2019 3 4
Schedule of Unconsolidated Joint Ventures Revenue and Costs	Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Revenue Total $ 436,071 $ 449,996 $ 852,005 $ 689,437 Less partners’ interest and adjustments 1 399,227 340,809 682,668 461,841 Granite’s interest 36,844 109,187 169,337 227,596 Cost of revenue Total 456,484 423,385 867,969 804,274 Less partners’ interest and adjustments 1 312,455 296,250 592,461 562,751 Granite’s interest 144,029 127,135 275,508 241,523 Granite’s interest in gross loss $ (107,185 ) $ (17,948 ) $ (106,171 ) $ (13,927 ) 1

Investments in Affiliates (Tabl

Investments in Affiliates (Tables)	6 Months Ended
	Jun. 30, 2019
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Investments in and Advances to Affiliates	Our investments in affiliates balance consists of equity method investments in the following types of entities: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Foreign $ 55,563 $ 55,715 $ 63,000 Real estate 17,781 19,676 27,591 Asphalt terminal 8,765 8,963 8,904 Total investments in affiliates $ 82,109 $ 84,354 $ 99,495
Equity Method Investment Summarized Balance Sheet Information	The following table provides summarized balance sheet information for our affiliates accounted for under the equity method on a combined basis: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Current assets $ 138,564 $ 141,930 $ 136,953 Noncurrent assets 182,561 170,172 173,384 Total assets 321,125 312,102 310,337 Current liabilities 70,435 55,816 54,710 Long-term liabilities 1 70,381 63,098 54,383 Total liabilities 140,816 118,914 109,093 Net assets 180,309 193,188 201,244 Granite’s share of net assets $ 82,109 $ 84,354 $ 99,495 1

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2019
Property Plant And Equipment [Abstract]
Property and Equipment	Balances of major classes of assets and allowances for depreciation and depletion are included in property and equipment, net in the condensed consolidated balance sheets and were as follows: (in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Equipment and vehicles $ 943,456 $ 906,275 $ 933,951 Quarry property 191,972 180,246 178,809 Land and land improvements 134,151 142,271 141,549 Buildings and leasehold improvements 109,356 108,884 105,038 Office furniture and equipment 66,587 65,680 63,806 Property and equipment 1,445,522 1,403,356 1,423,153 Less: accumulated depreciation and depletion 888,404 853,668 827,366 Property and equipment, net $ 557,118 $ 549,688 $ 595,787

Long-Term Debt and Credit Arr_2

Long-Term Debt and Credit Arrangements (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	(in thousands) June 30, 2019 December 31, 2018 June 30, 2018 Senior notes payable $ 40,000 $ 40,000 $ 80,000 Credit Agreement term loan 142,500 146,250 150,000 Credit Agreement revolving credit loan 220,000 197,000 99,000 Convertible notes — — 160,765 Other 12,793 (845 ) (1,073 ) Total debt 415,293 382,405 488,692 Less current maturities 48,397 47,286 207,982 Total long-term debt $ 366,896 $ 335,119 $ 280,710

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Schedule of Undiscounted Lease Liabilities Outstanding	The following table summarizes our undiscounted lease liabilities outstanding as of June 30, 2019 Remainder of 2019 $ 9,543 2020 18,541 2021 17,303 2022 15,222 2023 10,268 2024 through 2035 20,790 Total future minimum lease payments $ 91,667 Less: imputed interest 15,219 Total $ 76,448

Weighted Average Shares Outst_2

Weighted Average Shares Outstanding and Net Loss Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Summary of Reconciliation of Weighted Average Shares Outstanding in Basic and Diluted Net Loss Per Share	The following table presents a reconciliation of the weighted average shares outstanding used in calculating basic and diluted net loss per share as well as the calculation of basic and diluted net loss per share: Three Months Ended June 30, Six Months Ended June 30, (in thousands, except per share amounts) 2019 2018 2019 2018 Numerator (basic and diluted) Net loss allocated to common shareholders for basic calculation $ (97,836 ) $ (8,385 ) $ (132,410 ) $ (19,808 ) Denominator Weighted average common shares outstanding, basic 46,824 41,044 46,762 40,074 Dilutive effect of RSUs 1 — — — — Weighted average common shares outstanding, diluted 46,824 41,044 46,762 40,074 Net loss per share, basic $ (2.09 ) $ (0.20 ) $ (2.83 ) $ (0.49 ) Net loss per share, diluted $ (2.09 ) $ (0.20 ) $ (2.83 ) $ (0.49 ) 1

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Schedule of (Benefit From) Provision for Income Taxes	The following table presents the (benefit from) provision for income taxes for the respective periods: Three Months Ended June 30, Six Months Ended June 30, (dollars in thousands) 2019 2018 2019 2018 (Benefit from) provision for income taxes $ (31,760 ) $ 2,796 $ (40,925 ) $ (1,335 ) Effective tax rate 25.3 % (85.1 )% 24.7 % 7.8 %

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	Summarized segment information is as follows (in thousands): Three Months Ended June 30, Transportation Water Specialty Materials Total 2019 Total revenue from reportable segments $ 403,978 $ 112,831 $ 175,084 $ 143,010 $ 834,903 Elimination of intersegment revenue — — — (45,363 ) (45,363 ) Revenue from external customers 403,978 112,831 175,084 97,647 789,540 Gross (loss) profit (99,879 ) 11,263 22,210 14,002 (52,404 ) Depreciation, depletion and amortization 4,845 10,931 8,401 6,054 30,231 2018 Total revenue from reportable segments $ 502,711 $ 51,618 $ 151,842 $ 146,197 $ 852,368 Elimination of intersegment revenue — — — (45,249 ) (45,249 ) Revenue from external customers 502,711 51,618 151,842 100,948 807,119 Gross profit 35,963 5,450 21,476 17,480 80,369 Depreciation, depletion and amortization 5,373 4,378 9,212 6,074 25,037 Six Months Ended June 30, Transportation Water Specialty Materials Total 2019 Total revenue from reportable segments $ 742,188 $ 212,086 $ 315,777 $ 192,243 $ 1,462,294 Elimination of intersegment revenue — — — (52,953 ) (52,953 ) Revenue from external customers 742,188 212,086 315,777 139,290 1,409,341 Gross (loss) profit (78,629 ) 19,382 37,077 10,244 (11,926 ) Depreciation, depletion and amortization 8,485 21,987 14,213 11,633 56,318 Segment assets 350,679 302,294 148,441 376,619 1,178,033 2018 Total revenue from reportable segments $ 861,856 $ 91,659 $ 270,313 $ 199,519 $ 1,423,347 Elimination of intersegment revenue — — — (52,849 ) (52,849 ) Revenue from external customers 861,856 91,659 270,313 146,670 1,370,498 Gross profit 67,425 17,014 37,212 15,001 136,652 Depreciation, depletion and amortization 10,393 4,884 11,339 11,484 38,100 Segment assets 426,698 359,141 157,313 304,121 1,247,273
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	A reconciliation of segment gross (loss) profit to consolidated loss before provision for (benefit from) income taxes is as follows: Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Total gross (loss) profit from reportable segments $ (52,404 ) $ 80,369 $ (11,926 ) $ 136,652 Selling, general and administrative expenses 69,998 61,316 151,153 122,568 Acquisition and integration expenses 9,177 26,287 12,500 34,696 Gain on sales of property and equipment (4,935 ) (1,505 ) (6,835 ) (2,048 ) Total other income (923 ) (2,444 ) (2,777 ) (1,486 ) Loss before (benefit from) provision for income taxes $ (125,721 ) $ (3,285 ) $ (165,967 ) $ (17,078 )

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands	May 22, 2019	Jun. 30, 2019	Jun. 30, 2018
Basis Of Presentation [Line Items]
Payment to acquire certain assets and equipment		$ 6,227	$ 55,030
Lametti & Sons, Inc. [Member]
Basis Of Presentation [Line Items]
Payment to acquire certain assets and equipment	$ 6,200

Basis of Presentation - Summary

Basis of Presentation - Summary of Reconciliation of Cash, Cash Equivalents, and Restricted Cash Reported in the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents and restricted cash of $5,825 and $0 at beginning of each period	$ 278,629	$ 233,711
Cash and cash equivalents	144,958	195,515
Restricted cash	5,825	5,746
Cash, cash equivalents and restricted cash of $5,825 and $5,746 at end of each period	150,783	201,261
Net decrease in cash, cash equivalents and restricted cash	$ (127,846)	$ (32,450)

Recently Issued and Adopted A_2

Recently Issued and Adopted Accounting Pronouncements - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018	Jun. 30, 2018
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
ROU assets	$ 73,439		$ 0	$ 0
Short term lease liabilities	15,600
Long term lease liabilities	60,868		0	0
Cumulative decrease to retained earnings	$ 642,124		$ 787,356	$ 737,417
ASU 2016-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
ROU assets		$ 72,200
Short term lease liabilities		14,900
Long term lease liabilities		60,400
Cumulative decrease to retained earnings		$ (500)

Acquisitions - Schedule of Pro

Acquisitions - Schedule of Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Business Combinations [Abstract]
Revenue	$ 909,783	$ 1,583,073
Net income	16,834	14,454
Net income attributable to Granite	$ 14,530	$ 10,389
Basic net income per share attributable to common shareholders	$ 0.32	$ 0.23
Diluted net income per share attributable to common shareholders	$ 0.30	$ 0.22

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details)	6 Months Ended
	Jun. 30, 2019
Pro Forma [Member]
Business Acquisition [Line Items]
Federal statutory tax, Percent	26.00%

Revisions in Estimates - Additi

Revisions in Estimates - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Change In Accounting Estimate [Line Items]
Total revenue	$ 789,540	$ 807,119	$ 1,409,341	$ 1,370,498
Gross profit (loss)	(52,404)	80,369	(11,926)	136,652
Net income (loss)	(97,836)	(8,385)	(132,410)	(19,808)
Change in project profitability from revisions in estimates	5,000	5,000	5,000	5,000
Decrease to project profitability	161,100	30,200	167,800	38,000
Transportation [Member]
Change In Accounting Estimate [Line Items]
Total revenue	403,978	502,711	742,188	861,856
Revisions in Estimates [Member]
Change In Accounting Estimate [Line Items]
Net income (loss)	$ (120,200)	$ (23,200)	$ (125,400)	$ (29,100)
Decrease to project profitability, per share	$ (2.57)	$ (0.57)	$ (2.68)	$ (0.73)
Revisions in Estimates [Member] | Transportation [Member]
Change In Accounting Estimate [Line Items]
Total revenue	$ (4,300)
Gross profit (loss)	(4,300)
Net income (loss)	$ (3,200)		$ (3,200)

Revisions in Estimates - Summar

Revisions in Estimates - Summary of Impact of Revisions in Estimates to Gross Profit (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)project	Jun. 30, 2018USD ($)project	Jun. 30, 2019USD ($)project	Jun. 30, 2018USD ($)project
Change In Accounting Estimate [Line Items]
Number of projects with downward estimate changes | project	5	2	5	3
Gross profit (loss)	$ 52,404	$ (80,369)	$ 11,926	$ (136,652)
Decrease to project profitability	161,100	30,200	167,800	38,000
Minimum [Member] | Revisions in Estimates [Member]
Change In Accounting Estimate [Line Items]
Gross profit (loss)	7,500	14,500	8,500	5,200
Maximum [Member] | Revisions in Estimates [Member]
Change In Accounting Estimate [Line Items]
Gross profit (loss)	$ 77,300	$ 15,700	$ 77,300	$ 18,300

Disaggregation of Revenue - Sch

Disaggregation of Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Total revenue	$ 789,540	$ 807,119	$ 1,409,341	$ 1,370,498
California [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	234,987	257,990	361,088	467,889
Federal [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	18,945	10,938	34,681	15,733
Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	80,390	198,076	279,895	381,162
Midwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	67,717	82,601	121,750	154,883
Northwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	251,243	216,965	354,837	305,356
Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	136,258	40,549	257,090	45,475
Transportation [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	403,978	502,711	742,188	861,856
Transportation [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	138,411	156,344	207,924	272,914
Transportation [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	51	101	77	358
Transportation [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	77,009	192,598	271,980	371,462
Transportation [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	28,135	22,113	46,196	38,455
Transportation [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	160,372	131,555	216,011	178,667
Transportation [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0	0	0	0
Water [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	112,831	51,618	212,086	91,659
Water [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,634	4,553	4,000	33,592
Water [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	371	627	879	1,118
Water [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	3,381	5,478	7,915	9,700
Water [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0	1,020	84	1,516
Water [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,349	1,524	2,580	2,391
Water [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	105,096	38,416	196,628	43,342
Specialty [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	175,084	151,842	315,777	270,313
Specialty [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	42,980	41,899	75,137	73,201
Specialty [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	18,523	10,210	33,725	14,257
Specialty [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0	0	0	0
Specialty [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	39,582	59,468	75,470	114,912
Specialty [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	48,676	40,265	80,868	67,943
Specialty [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	25,323	0	50,577	0
Materials [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	97,647	100,948	139,290	146,670
Materials [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	50,962	55,194	74,027	88,182
Materials [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0	0	0	0
Materials [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0	0	0	0
Materials [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	0	0	0	0
Materials [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	40,846	43,621	55,378	56,355
Materials [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 5,839	$ 2,133	$ 9,885	$ 2,133

Unearned Revenue - Schedule of

Unearned Revenue - Schedule of Unearned Revenue (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018
Disaggregation Of Revenue [Line Items]
Unearned revenue	$ 3,692,312	$ 2,863,611	$ 3,416,340
California [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	724,175	475,885	397,338
Northwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	468,269	418,051	383,856
Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	1,763,965	1,328,691	1,915,020
Federal [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	147,946	137,611	161,099
Midwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	363,237	309,459	333,625
Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	224,720	193,914	225,402
Transportation [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	2,921,437	2,187,300	2,594,464
Transportation [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	590,641	402,482	332,252
Transportation [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	374,148	344,414	315,189
Transportation [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	1,751,819	1,311,518	1,882,806
Transportation [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	80	19	26
Transportation [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	204,749	128,867	64,191
Transportation [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	0	0	0
Water [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	253,418	220,303	275,932
Water [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	14,382	7,314	17,485
Water [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	710	1,759	206
Water [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	12,146	17,173	32,214
Water [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	1,350	0	0
Water [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	110	143	625
Water [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	224,720	193,914	225,402
Specialty [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	517,457	456,008	545,944
Specialty [Member] | California [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	119,152	66,089	47,601
Specialty [Member] | Northwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	93,411	71,878	68,461
Specialty [Member] | Heavy Civil [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	0	0	0
Specialty [Member] | Federal [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	146,516	137,592	161,073
Specialty [Member] | Midwest [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	158,378	180,449	268,809
Specialty [Member] | Water and Mineral Services [Member]
Disaggregation Of Revenue [Line Items]
Unearned revenue	$ 0	$ 0	$ 0

Contract Assets and Liabiliti_3

Contract Assets and Liabilities - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Loss Contingencies [Line Items]
Revenue recognized	$ 8,800,000	$ 13,300,000	$ 105,600,000	$ 102,700,000
Aggregate claim recovery estimate included in contract assets and liability	58,700,000	36,100,000	58,700,000	36,100,000	$ 45,100,000
Contract retention, uncollectable amount			0
Performance Obligations [Member]
Loss Contingencies [Line Items]
Contracts Revenue	$ 43,500,000	$ 33,200,000	$ 84,800,000	$ 60,900,000

Contract Assets and Liabiliti_4

Contract Assets and Liabilities - Component of Contract Asset Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Revenue From Contract With Customer [Abstract]
Costs in excess of billings and estimated earnings	$ 161,500	$ 120,223	$ 161,670
Contract retention	96,150	99,531	103,520
Total contract assets	$ 257,650	$ 219,754	$ 265,190

Contract Assets and Liabiliti_5

Contract Assets and Liabilities - Components of Contract Liabilities Balance (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Revenue From Contract With Customer [Abstract]
Billings in excess of costs and estimated earnings, net of retention	$ 117,029	$ 103,250	$ 91,147
Provisions for losses	2,260	2,199	717
Total contract liabilities	$ 119,289	$ 105,449	$ 91,864

Receivables, Net - Summary of R

Receivables, Net - Summary of Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-gross	$ 552,599	$ 473,757	$ 492,784
Less: allowance for doubtful accounts	641	511	66
Accounts receivable-net	551,958	473,246	492,718
Completed and in Progress [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed	313,185	285,521	340,548
Unbilled	163,950	98,755	71,464
Accounts receivable-gross	477,135	384,276	412,012
Material Sales [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-gross	61,204	45,286	64,128
Other Business Products and Services [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-gross	$ 14,260	$ 44,195	$ 16,644

Marketable Securities - Carryin

Marketable Securities - Carrying Amounts of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Schedule of Marketable Securities [Line Items]
Short-term marketable securities	$ 41,037	$ 30,002	$ 20,014
Long-term marketable securities	20,000	36,098	61,191
Total marketable securities	61,037	66,100	81,205
U.S. Government and agency obligations [Member]
Schedule of Marketable Securities [Line Items]
Short-term marketable securities	41,037	24,996	15,000
Long-term marketable securities	20,000	36,098	61,191
Corporate bonds [Member]
Schedule of Marketable Securities [Line Items]
Short-term marketable securities	$ 0	$ 5,006	$ 5,014

Marketable Securities - Maturit

Marketable Securities - Maturities of Held to Maturity Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Marketable Securities [Abstract]
Due within one year	$ 41,037
Due in one to five years	20,000
Total marketable securities	$ 61,037	$ 66,100	$ 81,205

Fair Value Measurement - Cash a

Fair Value Measurement - Cash and Cash Equivalents (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Assets, Fair Value Disclosure
Interest rate cash flow hedge, assets			$ 473
Total Assets, Fair Value	$ 23,615	$ 90,438	62,753
Liabilities, Fair Value Disclosure
Interest rate cash flow hedge, liabilities	4,985	1,098
Total liabilities	4,985	1,098
Money Market Funds [Member]
Assets, Fair Value Disclosure
Cash equivalents	17,790	84,613	56,534
Restricted Cash [Member]
Assets, Fair Value Disclosure
Other noncurrent assets	5,825	5,825	5,746
Level 1 [Member]
Assets, Fair Value Disclosure
Interest rate cash flow hedge, assets			0
Total Assets, Fair Value	23,615	90,438	62,280
Liabilities, Fair Value Disclosure
Interest rate cash flow hedge, liabilities	0	0
Total liabilities	0	0
Level 1 [Member] | Money Market Funds [Member]
Assets, Fair Value Disclosure
Cash equivalents	17,790	84,613	56,534
Level 1 [Member] | Restricted Cash [Member]
Assets, Fair Value Disclosure
Other noncurrent assets	5,825	5,825	5,746
Level 2 [Member]
Assets, Fair Value Disclosure
Interest rate cash flow hedge, assets			473
Total Assets, Fair Value	0	0	473
Liabilities, Fair Value Disclosure
Interest rate cash flow hedge, liabilities	4,985	1,098
Total liabilities	4,985	1,098
Level 2 [Member] | Money Market Funds [Member]
Assets, Fair Value Disclosure
Cash equivalents	0	0	0
Level 2 [Member] | Restricted Cash [Member]
Assets, Fair Value Disclosure
Other noncurrent assets	0	0	0
Level 3 [Member]
Assets, Fair Value Disclosure
Interest rate cash flow hedge, assets			0
Total Assets, Fair Value	0	0	0
Liabilities, Fair Value Disclosure
Interest rate cash flow hedge, liabilities	0	0
Total liabilities	0	0
Level 3 [Member] | Money Market Funds [Member]
Assets, Fair Value Disclosure
Cash equivalents	0	0	0
Level 3 [Member] | Restricted Cash [Member]
Assets, Fair Value Disclosure
Other noncurrent assets	$ 0	$ 0	$ 0

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Details) - Commodity Swap [Member] - USD ($)	1 Months Ended
	Feb. 28, 2019	Jun. 30, 2019
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Original notional amount	$ 8,700,000
Percentage of forecasted purchases for diesel designated as cash flow hedges	60.00%
Fair value of derivative		$ 200,000

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Carrying and Fair Value Amounts (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Level 1 [Member] | Other Assets Liabilities, Carrying Value [Member]
Balance Sheet Grouping
Held-to-maturity marketable securities	$ 61,037	$ 66,100	$ 81,205
Convertible notes	0	0	160,765
Level 1 [Member] | Other Assets, Liabilities, Fair Value [Member]
Balance Sheet Grouping
Held-to-maturity marketable securities	60,887	65,290	80,006
Convertible notes	0	0	186,410
Level 3 [Member] | Other Assets Liabilities, Carrying Value [Member]
Balance Sheet Grouping
2019 Notes	40,000	40,000	80,000
Credit Agreement - term loan	142,500	146,250	150,000
Level 3 [Member] | Other Assets Liabilities, Carrying Value [Member] | Revolving Credit Facility [Member]
Balance Sheet Grouping
Revolving credit agreement	220,000	197,000	99,000
Level 3 [Member] | Other Assets, Liabilities, Fair Value [Member]
Balance Sheet Grouping
2019 Notes	40,571	40,484	81,307
Credit Agreement - term loan	143,109	147,141	150,608
Level 3 [Member] | Other Assets, Liabilities, Fair Value [Member] | Revolving Credit Facility [Member]
Balance Sheet Grouping
Revolving credit agreement	$ 220,597	$ 197,889	$ 99,267

Construction Joint Ventures - A

Construction Joint Ventures - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)project	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)project	Jun. 30, 2018USD ($)
Construction Joint Venture
Construction Contract Value	$ 3,300,000		$ 3,300,000
Revenue	789,540	$ 807,119	1,409,341	$ 1,370,498
Net cash provided by (used in) operating activities			(93,515)	(75,445)
Corporate Joint Venture [Member]
Construction Joint Venture
Revenue Remaining to be Recognized on Unconsolidated Construction Joint Ventures	3,100,000		3,100,000
Equity Method Investee [Member]
Construction Joint Venture
Revenue Remaining to be Recognized on Unconsolidated Construction Joint Ventures	1,100,000		1,100,000
Unconsolidated Construction Joint Venture Net Income (Loss)	(106,300)	(17,700)	(105,800)	(13,400)
Co-venturer [Member]
Construction Joint Venture
Revenue Remaining to be Recognized on Unconsolidated Construction Joint Ventures	$ 2,000,000		$ 2,000,000
Majority Shareholder [Member]
Construction Joint Venture
Number of active construction joint venture projects | project	8		8
Construction Contract Value	$ 1,300,000		$ 1,300,000
Revenue			352,200
Revenue	79,000	67,700	145,900	111,500
Net cash provided by (used in) operating activities			5,300	(15,100)
Majority Shareholder [Member] | Minimum [Member]
Construction Joint Venture
Construction Contract Value	$ 39,500		39,500
Revenue			$ 200
Proportionate Share of the Joint Ventures Equity Owned by or Beneficial Interest in the Reporting Entity Directly or Indirectly	50.00%		50.00%
Majority Shareholder [Member] | Maximum [Member]
Construction Joint Venture
Construction Contract Value	$ 409,700		$ 409,700
Revenue			$ 150,000
Proportionate Share of the Joint Ventures Equity Owned by or Beneficial Interest in the Reporting Entity Directly or Indirectly	65.00%		65.00%
Principal Owner [Member]
Construction Joint Venture
Number of active construction joint venture projects | project	9		9
Construction Contract Value	$ 11,400,000		$ 11,400,000
Revenue			900,000
Unconsolidated Construction Joint Venture Net Income (Loss)	(18,900)	$ 26,500	(13,700)	$ (114,400)
Principal Owner [Member] | Minimum [Member]
Construction Joint Venture
Construction Contract Value	$ 104,100		$ 104,100
Proportionate Share of the Joint Ventures Equity Owned by or Beneficial Interest in the Reporting Entity Directly or Indirectly	20.00%		20.00%
Revenue			$ 1,700
Principal Owner [Member] | Maximum [Member]
Construction Joint Venture
Construction Contract Value	$ 3,800,000		$ 3,800,000
Proportionate Share of the Joint Ventures Equity Owned by or Beneficial Interest in the Reporting Entity Directly or Indirectly	50.00%		50.00%
Revenue			$ 252,100

Construction Joint Ventures - S

Construction Joint Ventures - Schedule of Unconsolidated Construction Joint Ventures Assets and Liabilities (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Construction Joint Venture
Unconsolidated Construction Joint Venture Assets, Noncurrent Assets		$ 214,238	$ 204,090	$ 211,963
Equity in Construction Joint Ventures	[1]	183,062	271,162	237,731
Other Partners Interest in Partnerships [Member]
Construction Joint Venture
Unconsolidated Construction Joint Venture Assets		929,332	822,215	792,567
Unconsolidated Construction Joint Venture Liabilities	[2]	243,241	369,782	342,760
Reporting Entitys Interest in Joint Venture [Member]
Construction Joint Venture
Unconsolidated Construction Joint Venture Assets	[3],[4]	470,475	426,416	430,671
Unconsolidated Construction Joint Venture Liabilities		287,413	155,254	192,940
Cash and Cash Equivalents [Member]
Construction Joint Venture
Unconsolidated Construction Joint Venture Assets		225,163	229,562	309,330
Other Assets, Current and Longterm [Member]
Construction Joint Venture
Unconsolidated Construction Joint Venture Assets	[3]	960,406	814,979	701,945
Accounts Payable [Member]
Construction Joint Venture
Unconsolidated Construction Joint Venture Liabilities		$ 530,654	$ 525,036	$ 535,700
[1]	Included in this balance and in accrued expenses and other current liabilities on the condensed consolidated balance sheets were amounts related to deficits in construction joint ventures, which includes provisions for losses, that were $58.7 million, $11.5 million and $14.7 million as of June 30, 2019, December 31, 2018 and June 30, 2018, respectively.
[2]	Partners’ interest and adjustments includes amounts to reconcile total net assets as reported by our partners to Granite’s interest adjusted to reflect our accounting policies and estimates primarily related to contract forecast differences.
[3]	Included in this balance and in accrued expenses and other current liabilities on our condensed consolidated balance sheets was $88.7 million, $88.2 million, $88.6 million related to performance guarantees as of June 30, 2019
[4]	Included in this balance as of June 30, 2019

Construction Joint Ventures -_2

Construction Joint Ventures - Schedule of Unconsolidated Construction Joint Ventures Assets and Liabilities (Parenthetical) (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Construction Joint Venture
Performance Guarantees	$ 88.7	$ 88.2	$ 88.6
Unconsolidated Joint Venture Back charges claims	12.8	15.6	10.6
Deficit in unconsolidated construction joint venture, including provisions for losses	58.7	11.5	14.7
Reporting Entitys Interest in Joint Venture [Member]
Construction Joint Venture
Affirmative Claim Recovery Estimate	$ 89.4	$ 78.1	$ 65.8

Construction Joint Ventures -_3

Construction Joint Ventures - Schedule of Unconsolidated Construction Joint Ventures Revenue and Costs (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Construction And Line Item Joint Ventures Abstract
Total cost of revenue		$ 841,944	$ 726,750	$ 1,421,267	$ 1,233,846
Unconsolidated Construction Joint Venture Gross Loss		(107,185)	(17,948)	(106,171)	(13,927)
Collaborative Arrangement [Member]
Construction And Line Item Joint Ventures Abstract
Unconsolidated Construction Joint Venture Revenue		36,844	109,187	169,337	227,596
Total cost of revenue		144,029	127,135	275,508	241,523
Collaborative Arrangement [Member] | Corporate Joint Venture [Member]
Construction And Line Item Joint Ventures Abstract
Unconsolidated Construction Joint Venture Revenue		436,071	449,996	852,005	689,437
Total cost of revenue		456,484	423,385	867,969	804,274
Other Partners Interest in Partnerships [Member] | Collaborative Arrangement [Member] | Co-venturer [Member]
Construction And Line Item Joint Ventures Abstract
Unconsolidated Construction Joint Venture Revenue	[1]	399,227	340,809	682,668	461,841
Total cost of revenue	[1]	$ 312,455	$ 296,250	$ 592,461	$ 562,751
[1]	Partners’ interest and adjustments includes amounts to reconcile total revenue and total cost of revenue as reported by our partners to Granite’s interest adjusted to reflect our accounting policies and estimates primarily related to contract forecast differences.

Investments in Affiliates - Add

Investments in Affiliates - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)Investment	Dec. 31, 2018USD ($)	Jun. 30, 2018USD ($)
Investments In And Advances To Affiliates [Line Items]
Number of Investments in Foreign Entities | Investment	13
Number of Investments in Real Estate Entities | Investment	4
Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 321,125	$ 312,102	$ 310,337
Joint Venture Unconsolidated [Member] | Texas [Member]
Investments In And Advances To Affiliates [Line Items]
Equity Method Investments	14,200	16,300	24,000
Other Affiliates [Member] | Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	321,100
Equity Method Investments	82,109	$ 84,354	$ 99,495
Variable Interest Entity, Not Primary Beneficiary [Member] | Joint Venture Unconsolidated [Member] | Asphalt Terminal Entity [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 28,100
Minimum [Member] | Foreign Affiliates [Member] | Joint Venture Unconsolidated [Member] | Equity Method Investment Directly Owned [Member]
Investments In And Advances To Affiliates [Line Items]
Ownership percentage	25.00%
Minimum [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Real Estate Entities [Member] | Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 400
Minimum [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Foreign Affiliates [Member] | Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 200
Maximum [Member] | Foreign Affiliates [Member] | Joint Venture Unconsolidated [Member] | Equity Method Investment Indirectly Owned [Member]
Investments In And Advances To Affiliates [Line Items]
Ownership percentage	50.00%
Maximum [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Real Estate Entities [Member] | Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 52,300
Maximum [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] | Foreign Affiliates [Member] | Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 76,600

Investments in Affiliates - Inv

Investments in Affiliates - Investments in Affiliates (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Investments In And Advances To Affiliates [Line Items]
Investments in affiliates	$ 82,109	$ 84,354	$ 99,495
Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Investments in affiliates	82,109	84,354	99,495
Joint Venture Unconsolidated [Member] | Foreign Affiliates [Member]
Investments In And Advances To Affiliates [Line Items]
Investments in affiliates	55,563	55,715	63,000
Joint Venture Unconsolidated [Member] | Real Estate [Member]
Investments In And Advances To Affiliates [Line Items]
Investments in affiliates	17,781	19,676	27,591
Joint Venture Unconsolidated [Member] | Asphalt Terminal [Member]
Investments In And Advances To Affiliates [Line Items]
Investments in affiliates	$ 8,765	$ 8,963	$ 8,904

Investments in Affiliates - Equ

Investments in Affiliates - Equity Method Investment Summarized Balance Sheet Information (Details) - Joint Venture Unconsolidated [Member] - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Investments In And Advances To Affiliates [Line Items]
Equity Method Investment, Summarized Financial Information, Current Assets		$ 138,564	$ 141,930	$ 136,953
Equity Method Investment, Summarized Financial Information, Noncurrent Assets		182,561	170,172	173,384
Equity Method Investment, Summarized Financial Information, Assets		321,125	312,102	310,337
Equity Method Investment, Summarized Financial Information, Current Liabilities		70,435	55,816	54,710
Equity Method Investment, Summarized Financial Information, Long-term Liabilities	[1]	70,381	63,098	54,383
Equity Method Investment, Summarized Financial Information, Total Liabilities		140,816	118,914	109,093
Equity Method Investments Summarized Financial Information Net Assets		180,309	193,188	201,244
Other Affiliates [Member]
Investments In And Advances To Affiliates [Line Items]
Equity Method Investment, Summarized Financial Information, Assets		321,100
Equity Method Investments		$ 82,109	$ 84,354	$ 99,495
[1]	The balance primarily relates to debt associated with our real estate investments.

Property and Equipment, Net - P

Property and Equipment, Net - Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Property Plant And Equipment [Line Items]
Property and equipment	$ 1,445,522	$ 1,403,356	$ 1,423,153
Accumulated depreciation and depletion	888,404	853,668	827,366
Property and equipment, net	557,118	549,688	595,787
Equipment and vehicles [Member]
Property Plant And Equipment [Line Items]
Property and equipment	943,456	906,275	933,951
Quarry property [Member]
Property Plant And Equipment [Line Items]
Property and equipment	191,972	180,246	178,809
Land and land improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment	134,151	142,271	141,549
Building and leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment	109,356	108,884	105,038
Office furniture and equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment	$ 66,587	$ 65,680	$ 63,806

Long-Term Debt and Credit Arr_3

Long-Term Debt and Credit Arrangements - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	$ 415,293	$ 382,405	$ 488,692
Less current maturities	48,397	47,286	207,982
Total long-term debt	366,896	335,119	280,710
Senior Notes [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	40,000	40,000	80,000
Term Loan [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	142,500	146,250	150,000
Less current maturities	7,500	7,500	7,500
Total long-term debt	135,000	138,800	142,500
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Agreement revolving credit loan	220,000	197,000	99,000
Convertible Notes [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	0	0	160,765
Other notes payables [Member]
Debt Instrument [Line Items]
Other	$ 12,793	$ (845)	$ (1,073)

Long-Term Debt and Credit Arr_4

Long-Term Debt and Credit Arrangements - Additional Information (Details) - USD ($) $ in Thousands	Jul. 29, 2019	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	May 31, 2018
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in the Remainder of 2019		$ 44,200
Long-term Debt, Maturities, Repayments of Principal in 2020		8,400
Long-term Debt, Maturities, Repayments of Principal in 2021		8,500
Long-term Debt, Maturities, Repayments of Principal in 2022		8,500
Long-term Debt, Maturities, Repayments of Principal in 2023		337,300
Long-term Debt, Maturities, Repayments of Principal in 2024		8,900
Current maturities of long-term debt		48,397	$ 207,982	$ 47,286
Long-term debt		366,896	280,710	335,119
Letters of Credit Outstanding, Amount		$ 32,300
Consolidated Interest Coverage Ratio, Actual		11.28
Consolidated Interest Coverage Ratio, Covenant		4
Consolidated Leverage Ratio, Maximum		3.25
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity					$ 350,000
Line of Credit, Current		$ 220,000	99,000	197,000
Senior Notes [Member] | 2019 Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 40,000	80,000	40,000
Debt instrument, interest rate, stated percentage		6.11%
Current maturities of long-term debt		$ 40,000	40,000	40,000
Senior Notes [Member] | 2019 Notes [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Called and redeemed outstanding long-term debt	$ 40,000
Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 150,000
Current maturities of long-term debt		7,500	7,500	7,500
Long-term debt		142,500
Long-term debt		135,000	$ 142,500	$ 138,800
Debt instrument redemption price percentage required to repay			1.25%
Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 97,700
Adjusted Consolidated Leverage Ratio, Actual		2.09
Line of Credit [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.75%
Line of Credit Facility, Interest Rate at Period End		4.07%
Line of Credit [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.75%
Line of Credit Facility, Interest Rate at Period End		6.25%

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Leases [Abstract]
Operating lease term of contract	29 years	29 years
Right of use assets	$ 73,439	$ 73,439	$ 0	$ 0
Operating lease liabilities, current	15,600	15,600
Long term lease liabilities	60,868	60,868	$ 0	$ 0
Lease expense	$ 4,600	$ 8,900
Weighted-average remaining lease term	6 years 3 months 18 days	6 years 3 months 18 days
Weighted-average discount rate	4.08%	4.08%

Leases - Schedule of Undiscount

Leases - Schedule of Undiscounted Lease Liabilities Outstanding (Details) $ in Thousands	Jun. 30, 2019USD ($)
Leases [Abstract]
Remainder of 2019	$ 9,543
2020	18,541
2021	17,303
2022	15,222
2023	10,268
2024 through 2035	20,790
Total future minimum lease payments	91,667
Less: imputed interest	15,219
Total	$ 76,448

Weighted Average Shares Outst_3

Weighted Average Shares Outstanding and Net Loss Per Share - Summary of Reconciliation of Weighted Average Shares Outstanding in Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net loss allocated to common shareholders for basic calculation	$ (97,836)	$ (8,385)	$ (132,410)	$ (19,808)
Weighted average common shares outstanding, basic	46,824	41,044	46,762	40,074
Dilutive effect of RSUs	0	0	0	0
Weighted average common shares outstanding, diluted	46,824	41,044	46,762	40,074
Net loss per share, basic	$ (2.09)	$ (0.20)	$ (2.83)	$ (0.49)
Net loss per share, diluted	$ (2.09)	$ (0.20)	$ (2.83)	$ (0.49)

Weighted Average Shares Outst_4

Weighted Average Shares Outstanding and Net Loss Per Share - Summary of Reconciliation of Weighted Average Shares Outstanding Used in Calculating Basic and Diluted Net Loss Per Share (Parenthetical) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Antidilutive shares excluded from calculating diluted net loss per share	375,000	960,000	398,000	732,000

Income Taxes - Schedule of (Ben

Income Taxes - Schedule of (Benefit From) Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
(Benefit from) provision for income taxes	$ (31,760)	$ 2,796	$ (40,925)	$ (1,335)
Effective tax rate	25.30%	(85.10%)	24.70%	7.80%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	25.30%	(85.10%)	24.70%	7.80%
Decrease to project profitability	$ 161.1	$ 30.2	$ 167.8	$ 38
Discrete adjustment	143.7
Discrete tax benefit	$ 37

Business Segment Information -

Business Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total revenue	$ 789,540	$ 807,119	$ 1,409,341	$ 1,370,498
Gross (loss) profit	(52,404)	80,369	(11,926)	136,652
Segment assets	2,558,141	2,556,325	2,558,141	2,556,325	$ 2,476,601
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	834,903	852,368	1,462,294	1,423,347
Gross (loss) profit	(52,404)	80,369	(11,926)	136,652
Depreciation, depletion and amortization	30,231	25,037	56,318	38,100
Segment assets	1,178,033	1,247,273	1,178,033	1,247,273
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	(45,363)	(45,249)	(52,953)	(52,849)
Transportation [Member]
Segment Reporting Information [Line Items]
Total revenue	403,978	502,711	742,188	861,856
Transportation [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	403,978	502,711	742,188	861,856
Gross (loss) profit	(99,879)	35,963	(78,629)	67,425
Depreciation, depletion and amortization	4,845	5,373	8,485	10,393
Segment assets	350,679	426,698	350,679	426,698
Transportation [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Water [Member]
Segment Reporting Information [Line Items]
Total revenue	112,831	51,618	212,086	91,659
Water [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	112,831	51,618	212,086	91,659
Gross (loss) profit	11,263	5,450	19,382	17,014
Depreciation, depletion and amortization	10,931	4,378	21,987	4,884
Segment assets	302,294	359,141	302,294	359,141
Water [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Specialty [Member]
Segment Reporting Information [Line Items]
Total revenue	175,084	151,842	315,777	270,313
Specialty [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	175,084	151,842	315,777	270,313
Gross (loss) profit	22,210	21,476	37,077	37,212
Depreciation, depletion and amortization	8,401	9,212	14,213	11,339
Segment assets	148,441	157,313	148,441	157,313
Specialty [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Materials [Member]
Segment Reporting Information [Line Items]
Total revenue	97,647	100,948	139,290	146,670
Materials [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	143,010	146,197	192,243	199,519
Gross (loss) profit	14,002	17,480	10,244	15,001
Depreciation, depletion and amortization	6,054	6,074	11,633	11,484
Segment assets	376,619	304,121	376,619	304,121
Materials [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	$ (45,363)	$ (45,249)	$ (52,953)	$ (52,849)

Business Segment Information _2

Business Segment Information - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Property and equipment, net	$ 557,118	$ 595,787	$ 557,118	$ 595,787	$ 549,688
Revenue	789,540	807,119	1,409,341	1,370,498
Foreign Countries [Member]
Segment Reporting Information [Line Items]
Property and equipment, net	14,400	$ 21,200	14,400	$ 21,200
Revenue	$ 19,900		$ 33,900

Business Segment Information _3

Business Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Gross (loss) profit	$ (52,404)	$ 80,369	$ (11,926)	$ 136,652
Selling, general and administrative expenses	69,998	61,316	151,153	122,568
Acquisition and integration expenses	9,177	26,287	12,500	34,696
Gain on sales of property and equipment	(4,935)	(1,505)	(6,835)	(2,048)
Total other income	(923)	(2,444)	(2,777)	(1,486)
Loss before (benefit from) provision for income taxes	(125,721)	(3,285)	(165,967)	(17,078)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Gross (loss) profit	$ (52,404)	$ 80,369	$ (11,926)	$ 136,652